Polls close in Colorado’s presidential primary at 9 p.m. Eastern time, and the first results are expected soon after. In the 2022 state primaries, the last update of the night was at 4:05 a.m. Eastern time with 90 percent of votes reported.

All registered voters were mailed primary ballots corresponding to the party they are registered with; unaffiliated voters were mailed Republican and Democratic ballots but could only return one. Voters could return ballots by mail, drop box or in person, as long as they were received by the close of polls. In-person voting centers have been open since Feb. 26.

An option to select a “noncommitted delegate” appeared on the Democratic ballot. In last week’s primary in Michigan, more than 13 percent of Democrats voted “uncommitted” as part of a protest of President Biden’s policies toward Israel and the war in Gaza.

The state primary, which will include races for state and congressional offices, will be held on June 25.